Monohypophyllotoxin is actually Monohypophyllotoxin Nitrate Injection, which has the effect of enhancing reflexes and muscle tension, and selectively excites the spinal cord. Monohypophyllotoxin Nitrate Injection is a kind of neurological drug, mainly used for the treatment of poliomyelitis sequelae and facial nerve paralysis, with the effect of enhancing reflexes and muscle tension, selective excitation of the spinal cord, but should be standardized under the guidance of a doctor to use the drug. Pain and swelling at the injection site, palpitation and headache may occur during administration. Monobasic nitrate injection must not be injected into blood vessels, the body metabolizes faster, no accumulation effect. However, overdose may cause symptoms of poisoning such as elevated blood pressure, facial twitching, diaphragmatic spasm, etc., and prompt medical attention should be sought.